IBM C1B 1.12 Brick On Sled Carrier 128-pin HPC, SSA Power Requirements by Model, 1 C1x Models

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U S E R RESPONSIBLE F O R V E R I F Y I N G VERSION A N D COMPLETENESS

O E M F U N C T I O N A L S P E C I F I C A T I O N U L T R A S T A R X P ( D F H C ) SSA M O D E L S 1.12/2.25 G B - 1.0" H I G H

2.2 Power Requirements by Model

2.2.1 C1x Models

The following voltage specifications apply at the drive power connector. There is no special power on/off sequencing required. The extra power needed for Brick O n Sled models and the + 3 8 V power option are described in 2.2.4, “CxB Models” onpage 33.

Input Voltage
+ 5 Volts Supply	5V (± 5 % during run and spin-up)
+ 1 2 Volts Supply	12V (± 5 % during run) ( + 5 % / - 7 % during spin-up)

The following current values are the combination measured values of SCSI models and SSA Cx4 model. The differences between SCSI and SSA is + 5 V currents. Because of different interface electronics and speed, SSA electronics card requires more + 5 V current than SCSI. Read/Write Base Line is 290 ma higher. Idle Average is 500 ma higher. (290ma and 500ma differences were found by measuring SSA Cx4 model). SSA

+5 V current numbers are derived from SCSI + 5 V current numbers by adding 290ma and 500ma accord- ingly.

Power Supply Current

+5 V D C (power-up)

+5 V D C (idle avg)

+5 V D C (R/W baseline)

+5 V D C (R/W pulse)

+1 2 V D C (power-up)

+1 2 V D C (idle avg)

+1 2 V D C (seek avg)

+1 2 V D C (seek peak)

+1 2 V D C (spin-up)

Drive power

Avg idle power

Avg R/W power

	Population			Population
Notes	Mean			Stand. Dev.

Minimum voltage slew rate =			4.5 V/sec

	1.23	Amps		0.02 Amps

	1.25	Amps1		0.05 Amps
Base-to-peak	.36 Amps			0.06 Amps


Minimum voltage slew rate =			7.4 V/sec

	0.28	Amps		0.02 Amps


1 op/sec	0.0027 Amps			0.002 Amps

	1.20	Amps2		0.02 Amps

3.0 sec max	1.5 Amps3			0.1 Amps

	9.51 Watts	.35 Watts

30 ops/sec	10.58 Watts	.35 Watts

1See Figure 1 on page 18 for a plot of how the read/write baseline and read/write pulse sum together.

2The idle average and seek peek should be added together to determine the total 12 volt peak current. See Figure 2 on page 19 for a typical buildup of these currents. Refer to examples on the following page to see how to combine these values.

Source filename=POWER

I B M Corporation

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Contents Form Factor Disk Drive Version BM Corporation Preface Source filename=STSSHEXT When Operating Limits ReliabilityContaminants Acoustic Levels Source filename=STSSHEXT Description FeaturesGeneral Features Interface Controller FeaturesModels Reliability FeaturesGeneral SpecificationsSectors/track sct/trk User bytes/sector ub/sctSectors/logical block sct/lba User bytes/logical block ub/lbaFor Each Notch Capacity EquationsFor Entire Drive + 1 2 Volts Supply Power Requirements by Model1 C1x Models Input Voltage + 5 Volts SupplyPower Calculation Examples Example 3. Power CalculationExample 1. Calculate the mean 12 volt average current Example 4. Calculate the 12 volt peak current Things to check when measuring 12 V supply currentVolt current during read/write operations C1x Models Typical 12 volt current C1x Models Typical 12 volt spin-up current C1x Models 2 C2x Models Power Calculation Examples Example 4. Calculate the 12 volt peak current Volt current during read/write operations C2x Models Typical 12 volt current C2x Models Typical 12 volt spin-up current C2x Models 3 C4x Models Power Calculation Examples Example 4. Calculate the 12 volt peak current Volt current during read/write operations C4x Models Typical 12 volt current C4x Models Typical 12 volt spin-up current C4x Models Power supply methods CxB Models4.2 DC/DC Converter Hot plug/unplug support Grounding Requirements of the Disk EnclosureM Corporation Event Nominal Maximum Bring-up Sequence and Stop TimesBring-up Sequence Times and Stop Time for C2x Models Source filename=PERFORM # of segments Ub/lba + PerformanceEnvironment Definition Workload DefinitionBasic Component Descriptions Command Execution TimeSequential RandomData Transfer to/from Disk Data Transfer to/from SSA Link CommentsTheoretical Data Sector Transfer Rate Approximating Performance for Different EnvironmentsWhen Read-ahead is Enabled When Read Caching is EnabledWhen Write Caching is Enabled When Adaptive Caching is EnabledBack-To-Back Commands When No Seek is RequiredFor Queued Commands Reordered CommandsSkew Cylinder to Cylinder SkewTrack to Track Skew Idle Time Functions Channel Calibration Servo Run Out MeasurementsServo Bias Measurements Predictive Failure AnalysisCommand Timeout Limits Save Logs and PointersDisk Sweep M Corporation Clearances Weight and DimensionsMechanical Small Form Factor Models CxCDimensions are in millimeters Location of Side Mounting Holes of C4C Models Source filename=MECHANIC Unitized Connector Locations Source filename=MECHANIC Carrier Models CxB Dimensions CxB Models M Corporation Handle Docking and Ejection System Auto-docking Assembly Side Rails Side Rail Positioning E D Locations front view CxB Models M Corporation Electrical Connector and Indicator LocationsElectrical Interface SSA Unitized ConnectorPin Carrier ConnectorRow SSA Link Electrical Characteristics Option Pins and IndicatorsSSA Link Cable Ground long Option Port Pin Device Activity Pin/Indicator Option Port PinDevice Fault Pin/Indicator Option Port Pin Write Protect Option Port PinProgrammable pin 1 Option Port Pin Front Jumper ConnectorEarly Power Off Warning or Power Fail Power Port Pin 12 12V Charge and 5V Charge Power Port pin 1Spindle Synchronization Over Sync Hard-wire M Corporation Source filename=RELIABLE Reliability Error DetectionSeek Error Rate Power On Hours ExamplesProduct Life Power on/off cyclesUseful Life Maximum on/off cyclesSample Failure Rate Projections Install Defect FreeMean Time Between Failure *MTBF Spql Shipped product quality levelESD Protection Periodic MaintenanceConnector Insertion Cycles Install Defect Free percentage PercentOperating Limits Temperature Measurement PointsP F E T Maximum ReliabilityVibration and Shock Temperature Measurement Points for all Models bottom viewDrive Mounting Guidelines Output Vibration LimitsOperating Vibration V4S Nonoperating VibrationContaminants Operating ShockNonoperating Shock Acoustic Levels Upper Limit Sound Power Requirements Bels for C4x ModelsSource filename=STANDARD Safety StandardsElectromagnetic Compatibility EMC M Corporation Serial Storage Architecture S S a P H Transport Bibliography